there are some arc cgs that will be unlocked when you choose to "complete" your raping of her that just began with groping in a back alley..also you'll get some after you finish all the routes in the game..and another opportunity to get some that you might've missed is when you're sleeping at night and you can choose which girl you imagine to have come to visit you for an h-scene
Velvet_Lerange wrote:I'm missing the 6th CG for Arcueid (first page). I got the bad ending, and both True and Good Endings, and I finished all the other routes. Help please!~
You have to hit every single one of Arc's affection points up to who you choose for the "dream", then a couple of decision points later choose to "return home" rather than continuing to search for her.